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TDF8599BTH датащи(PDF) 8 Page - NXP Semiconductors |
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TDF8599BTH датащи(HTML) 8 Page - NXP Semiconductors |
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8 / 54 page ![]() NXP Semiconductors TDF8599B I2C-bus controlled dual channel 43 W/2 Ohm, single channel 85 W/1 Ohm class-D power amplifier with load diagnostics TDF8599B All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved. Product data sheet Rev. 2 — 23 August 2016 8 / 54 Table 6. Mode setting pin OSCIO Mode Settings Pin OSCSET Pin OSCIO Master Rosc > 26 kΩ output Slave Rosc = 0 Ω; shorted to pin AGND input The value of the resistor Rosc sets the clock frequency based on equation1: (1) fosc (kHz) 300 500 450 350 400 001aak224 20 30 10 40 50 Rosc (kΩ) 0 Figure 4. Clock frequency as a function of Rosc 001aak218 OSCSET OSCIO Master Cosc R fosc Rosc TDF8599B OSCSET OSCIO Slave 1 TDF8599B OSCSET OSCIO Slave 2 TDF8599B Figure 5. Master and slave configuration In Master mode, Spread spectrum mode and frequency hopping can be enabled. In Slave mode, phase staggering and phase lock operation can be selected. An external clock can be used as the master-clock on pin OSCIO of the slave devices. When using an external clock, it must remain active during the shutdown sequence to ensure that all devices are switched off and able to enter the off state as described in Section 8.2. In Slave mode, an internal watchdog timer on pin OSCIO is triggered when the TDF8599B is switched off by pulling down pin EN. If the external clock fails, the watchdog timer forces the TDF8599B to switch off. |
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